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that tech that said that could could very well be full #### a 4 ton drive furnace on low speed blower could be just right and the oversized coil should not be a problem . there is a possibility that it could be a properly matched system

Depends a little on brand.
OD unit, look near where the copper lines attach to it. Probably just above them.
ID unit, look around where the lines attach also.
If you also have a furnace, it should be inside the access panel.

Depends a little on brand.
OD unit, look near where the copper lines attach to it. Probably just above them.
ID unit, look around where the lines attach also.
If you also have a furnace, it should be inside the access panel.